An alert with preformer name

Hi all,

I would like to to add an alert with paramter of preformer name.

I went to Alert composer and try to add an alert like this-

Hello, ${AlertUtils.userName(RecipientUserName).DisplayName}

 JourneyAssigneeDisplayName 

start to work

Access the task

I think I define it wrong becouse the massage go like this . With text and with no paramter.

Hello, מם

 JourneyAssigneeDisplayName 

Access the task

Can someone help me?

Thanks

Lior